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ustrial <br /> Sequoia 155! A 94070-4111 <br /> 4070 Road <br /> 1 San Carlos CA 94Q70-41 1 I <br /> (650) 232-9600 <br /> 5- Analytical FAX(650)232-9612 <br /> Blaine Tech Services Protect Blaine Project(2) Sampled 7/9/99 <br /> 1680 Rogers Avenue Project Number 990709-M1,341 East Main St,Ripon Received 7/9/99 <br /> San Jose,CA 95112-- - -- - — -- Pro ect Manager Ann Pember Reported 7/26/99 <br /> Sample Description EW-1 _ <br /> Laboratory Sample Number L907106-02 _ <br /> Batch Date Date Specific Method/ Reporting <br /> [Analyte Number Pr ared Analyzed Surrogate Limits Limit Result Units Notes* <br /> Sgquoia Analytical-San Carlos <br /> Total Purgeable Hydrocarbons W6-C-121=BTEX and MTBE by DHS LU <br /> Purgeable Hydrocarbons as Gasoline 9070049 7114199 7115/99 10000 ND ug/l <br /> Benzene 1. " or 100 ND " <br /> Toluene " " 100 ND " <br /> Ethylbenzene „ to to 100 ND " <br /> Xylenes(total) to 100 ND " <br /> Methyl tert-butyl ether _ 9070061 7/15/99 5000 74400 <br /> Surrogate a,a,a-Trifluorotoluene 9070049 7114/99 " 706 130 92 7 % <br /> MTBE by EPA Method 8260A <br /> Methyl tert-butyl ether 9070118 7/23/99 7/23/99 20Q0 94600 ug/l <br /> Surrogate 12-Dichloroethane-d4 " 760-114 107 % <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> p Page 3 of 6 <br />